Radiator



RADIATOR. FILED APR. 1. 1920.

ATWK/VEYS Patented Dec, 2%, i922.

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Application filed April 1,

To aZZ whom it; may concern:

l lo it'lrnown that l, Gin-mans W. Drrrnn'r, citizen of the United States, residing at Buffalo, in the county of Erieiand State of New York, have invented a new and useful improvement in Radiatorsfof which the following is a specification; i

This invention relates to radiators the kind used in connection with motor vehicles or the like. The objects of this invention are to provide improved water tubes for radiators of this kind which are made in two parts and which are so constructed as to facilitate the assembling and construction of the tubes;

also to so construct the water tubes as to facilitate the construction of the radiator; also to provide a radiator of this kind with radiating fins or webs of improved construction; also to improve the construction of radiators of this kind in other respects hereinafter specified. i

Inthe accompanying drawings,

Fig. 1 is a front elevation of a radiator embodying the invention.

Fig. 2 is a fragmentary transverse sectional elevation thereof showing on an enlarged scale, the core of the radiator.

Fig. 3 is a perspective view of an end of one of the water tubes of theradiator core. i

Figs. 4 and 5 areperspective views of the ends of the two parts comprisingthe water tube.

Fig. 6 is a perspective view of a radiating web or fin of the radiator. i

Fig. 7 is a horizontal section on line 7-? Fig. 8,-showing. on a still larger scale one of the water tubes. j p i 1 In the radiator shown, in Fig. l, A repre sents the upper reservoir or manifold of a radiator and B represents the lower reservoir or manifold, the two reservoirs being connected by a plurality of tubesC through which the water flows from one reservoir to another, the water being cooled while passing through the tubes C. I

The tubes C as shown in F igs. 3, 4., and 5 are made in two main parts or sections. One of these parts or sections D is provided at its front and rear portions with turned over or channeled parts c?preferably formed integral with the part D by turning over the edge portions of thesection D. The other portion E of the radiator is in the form of a substantially flat strip of metal and is adapted to be held in operative relation to 1920. Sari-a1 No. 370,411.

the part D by means of the channelled or turned over edge portionsd. The contact ing edgesof the two parts of the tube are dipped in solder or analogous medium, which forms awater tightjoint between the two parts'of the tube. J A. tube of this construction has the advantage that it can be very easily assembled. by; sliding the part E lengthwise along theohannels a. This structurehas the. further advantage of having three thicknesses of metalat the front and rearedges of the water tube which greatly strengthens these parts of the tube and thereby terms a durable and strong water tube. Either of the two parts or sections of the water'tubes is preferably provided with spacing portions, which in the construction shown, are provided on the section D of the waterj'tube and are formed integrally therewith. For this purpose the part D is provided with projecting portions (2 which whenthe tube is assembled extend into the water passagesand space the two side walls or parts of the tube from each. other. These spacing projections are preferably somewhat elongated but do not extend throughout the' run length of the water tubes, and thereby permit the water in a tube to circulate to all parts of the tube.

lin order to assemble the tubes to form the core of a radiator, each section of the tube is provided at opposite ends with lipsor flanges F F which extend substantiallyat right angles to the body portions of the tubes. When the core of the radiator is assembled, these projecting flanges or lips overlap as shown in FigJQ, and are secured together .by means of solder or analogous material, the lips or projections of the ends of the water tube-forming a simple lap joint which may constitute one of the walls of each of the manifolds or reservoirs A, and B; This lap joint construction greatly facilitates the assembling of radiator cores since no interlocking of the ends of the water tubesiis necessary. fThis'construction also requires less material and consequently produces a lighter core than constructions in which interlocking joints are used and greatly. reduces the cost of the radiator since projecting their entire faces.

against the ear faces of the water tubes, and curved or rounded portions .g' connecting the flat portions 9 and extending into the air spaces between adjacent water tubes. In the construction shown, two ofthese radiating fins are provided in each air space between adjacent water tubes and these fins are oppositely arranged so that the outer surfaces of the curved or rounded portions 9 arein'contact and thus assist in spacing. the parts of the radiator core. in radiators of this kind as heretofore constructed, these fins form a plurality of air passages extending from the front to the rear sides of the radiator, whichpassages are practically imperforate or closed so that air can not pass from one passage to another. 1 have found that better cooling of the water can be effected by providing means for permitting airto flow from one passage to another, as well as through the passages from end to end, In order to accomplish this result, the fins Gare provided at the outer faces of the curved portions 5 with perforations H extending lengthwise of the curved portions g. lVhenthe finsare in place in the radiator core the perforations H in thetwo fins are substantially in registration so that the air is free to circulate between thevarious air passages of the radiator .core. Sufiicient metal is left in the outer faces of the curved portions g of the fins so that these portions of the fins will be in contact to properly space the fins in the air spaces. p

In the forming of the fins, l have found that greatly improved results can be obtained by forming the flat portions g without any perforations so as to not impair the strength or resistance to bending of these parts of the fins. By using the construction shown in the drawings in which the flat portions are imperforate, these portions will lie flat against water tubes of the radiator and will operate with the greatest efficiency in conducting heat fromthe water tubesto the radiating fins. When the fiat portions 9 are provided with perforations the metal along the line of the perforations is weakened so that these parts of the metal tend to bend, with the result that the perforated portions are no longer flat andcontact with the wa ter tubes only along the edges of the contacting faces, instead of contacting along Thus by making the flat portions imperforate the flat portions of the fins contact with the water tubes in such a "manner as to efficiently conduct heat from the tubes, and these fiat portions by lying closely to the fiat tubes, draw the solder by capillaryattraction from the faces of the radiator to the interior thereof, so that by dipping only the front and rear faces of the radiator in solder, the solder will run between the adjacent faces of the tubes and fins and form a good heat conducting conthefins are then placed nection, without coating the other interme diate portions of the tubes and fins with solder.

1n assembling the radiator, the two sections of the tubes are first assembled and 7 between adjacent tubes. The flanges or lips F F form stops or, guides whichposition the fins correctly relatively to each other and to the water tubes, The water tubes can be easily placed into proper relation to each other since the flanges or lips do not require interlocking or special fitting.

I claim asmy invention 1. A water tube for a radiator including two sections formingthe sides of the tube, one of said sections having its edges bent over and spaced from the body portion of said section to form channelled edge portions, the edges of said other section engaging said spaced edge portions, meansxbetween the edges of said sections for holding the sections in spaced arrangement, whereby one section may be slidlengthwise of said other section and held in operative relation thereto, a water tight connection being formed between the edges ofssaid sectionsby means of'solder or the like.

:2, A fiat water tube for radiators including two sections forming the sidesof the tube, one of said sections having itslopposite edges bent over and spaced from the body portions to form channel shapedpor tions adapted to receive the edges of the other section, thebody portion ofwhich is substantially flat, and spacing projections formed on one of said sections between the edges thereof for forming a water circulating space between said sections, whereby said tube may be assembled by sliding said sectionslengthwise into-their operative positions, said sections being secured together by dipping the edges thereof in solder or the like. o

3. A radiator comprising watertubes each including two se ctions'forming the sides of the tube, one of said sections being provided with overturned edge portions which are spaced from the body portion of thesection and form guides for engaging the-relatively fiat edge'portionsof the otherrsection to loosely hold the two sections in operative relation to each other, means arranged between the edges of said sections for holding said sections in spaced-relation to each other, and spacing fins arranged between adjacent tubes and having fiat faces lying substantially in contact with the tubes, a water tight connection being formed between the edges of said tubes by solder or the like which also secures said flat portions of said fins to said tubes.

at; A radiator having a plurality of Water tubes each includingtwo sections forming the sides of the tube, the opposite edges. of

said sections being adapted to interlock to hold said sections in place and arranged at the front andrear faces of the radiator, one of said sections being jecting parts intermediate of the edges thereof adjusted to engage the other section for spacing said sections with regard to each other and for holding said sections in interlocking engagement, and spacing fins arprovided with proedges being arranged at the faces of the radiator, one ct having);

a inte ral inwardly exten tions between the edges thereof eng aging the other section for holding said edges in engagement, and spacing fins arranged be tween each pair of tubes, the opposite faces of the radiator when assembled being dipped in solder, forming a connection between said fins and between. the fins and said tubes, and soldering tubes.

Witness my hand this 29th day of March, 1920. i I

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NVitness'es 1V1. J. PITMAN,

E. PRooHNoW.

said interlocked edges of said, 

